将计算机用于天文学、空气动力学领域中，这属于计算机在（）方面的应用。
A.计算机辅助制造
B.辅助教学
C.科学计算
D.自动控制
参考答案：C
Not until years later _____ their leading position in the marketplace with the creation of Swatch watches.
A．the Swiss regained
B．the Swiss has regained
C．did the Swiss regain
D．has the Swiss regained
乳酸杆菌 （）
A.pH8.5
B.pH7.5
C.pH6.5
D.pH5.5
E.pH4.5
